What Are the Signs and Symptoms of Sudden Cardiac Arrest?

Usually, the first sign of sudden cardiac arrest (SCA) is loss of consciousness (fainting). At the same time, no heartbeat (or pulse) can be felt.

Some people may have a racing heartbeat or feel dizzy or light-headed just before they faint. Within an hour before SCA, some people have chest pain, shortness of breath, nausea (feeling sick to the stomach), or vomiting.

Clinical trials are
research studies that explore whether a medical strategy, treatment, or device is safe and effective for humans.
To find clinical trials that are currently underway for Sudden Cardiac Arrest, visit
www.clinicaltrials.gov.